High efficiency UTC photodiodes as photonic emitters for 300 GHz high spectral efficiency wireless communications

This paper presents the development and use of high-efficiency Unitravelling carrier photodiodes for THz communications. Using these devices, high output power is obtained close to the mW level. THz wireless links demonstration is also presented using these devices, using high-level modulation schemes (QAM-16) and 32 Gbit/s data-rate. This result demonstrates the capability of the UTC-PD devices of combining high power level and a linear behavior, mandatory for high-spectral efficiency data links in the THz range.